Egao no Taenai Shokuba desu.

Sinopsis

New shoujo manga artist Nana Futami works hard every day while being supported by Kaede Satou, her female editor who is older than her, and Mizuki Hazama, her assistant. According to the girl herself, she sometimes drums up intense daydream delusions of occupational illness! A working girls comedy set in the entertainment industry, brought to you by an author who always draws various girls. (Source: Kodansha, translated)